<template>
  <div class="login-bg-container">
    <!-- 食品溯源主题背景 -->
    <div class="food-traceability-bg">
      <!-- 主背景渐变 -->
      <div class="main-gradient"></div>
      
      <!-- 麻辣兔头相关装饰元素 -->
      <div class="food-elements">
        <!-- 兔头相关图标 -->
        <div class="food-icon rabbit-1">🐰</div>
        <div class="food-icon rabbit-2">🐇</div>
        <div class="food-icon rabbit-3">🍖</div>
        <div class="food-icon rabbit-4">🥩</div>
        
        <!-- 麻辣调料图标 -->
        <div class="food-icon spice-1">🌶️</div>
        <div class="food-icon spice-2">🌶</div>
        <div class="food-icon spice-3">🧄</div>
        <div class="food-icon spice-4">🧅</div>
        
        <!-- 四川特色元素 -->
        <div class="food-icon sichuan-1">🌶️</div>
        <div class="food-icon sichuan-2">🥢</div>
        <div class="food-icon sichuan-3">🍲</div>
        
        <!-- 传统食品图标 -->
        <div class="food-icon traditional-1">🥘</div>
        <div class="food-icon traditional-2">🍜</div>
        <div class="food-icon traditional-3">🥟</div>
      </div>
      
      <!-- 数据流线条 -->
      <div class="data-flow-lines">
        <div class="flow-line line-1"></div>
        <div class="flow-line line-2"></div>
        <div class="flow-line line-3"></div>
        <div class="flow-line line-4"></div>
      </div>
      
      <!-- 二维码装饰 -->
      <div class="qr-decoration">
        <div class="qr-code qr-1"></div>
        <div class="qr-code qr-2"></div>
        <div class="qr-code qr-3"></div>
      </div>
      
      <!-- 扫描线效果 -->
      <div class="scan-lines">
        <div class="scan-line scan-1"></div>
        <div class="scan-line scan-2"></div>
        <div class="scan-line scan-3"></div>
      </div>
    </div>
    
    <!-- 登录卡片 -->
    <div class="login-card-container">
      <el-card class="login-card">
        <!-- 系统标题 -->
        <div class="system-title">
          <div class="title-icon">🐰</div>
          <h1>溯源系统</h1>
          <p>正宗川味，品质可追溯</p>
        </div>
        
    <el-form
    ref="ruleFormRef"
          class="login-form"
    :model="ruleForm"
    :rules="rules"
    label-width="auto"
  >
    <el-form-item label="用户名" prop="userName">
            <el-input 
              v-model="ruleForm.userName" 
              placeholder="请输入用户名"
              prefix-icon="User"
              size="large"
            />
    </el-form-item>
          
    <el-form-item label="密码" prop="userPass">
            <el-input 
              v-model="ruleForm.userPass" 
              type="password" 
              show-password
              placeholder="请输入密码"
              prefix-icon="Lock"
              size="large"
            />
   </el-form-item>
          
          <el-form-item label="验证码" prop="checkCode">
            <div class="verification-container">
              <el-input 
                v-model="ruleForm.checkCode" 
                placeholder="请输入验证码"
                size="large"
                style="width: 120px;"
              />
              <el-tag type="primary" size="large" class="verification-code">
                {{ ruleForm.showCode }}=?
              </el-tag>
              <el-link type="primary" @click="createCheckCode" class="refresh-link">
                看不清,换一张
              </el-link>
            </div>
   </el-form-item>

          <el-form-item>
    <el-checkbox v-model="ruleForm.savePassword" label="记住密码" size="large" />
   </el-form-item>
          
          <el-form-item class="button-group">
            <el-button 
              type="primary" 
              @click="submitForm(ruleFormRef)"
              size="large"
              class="login-btn"
            >
        登录
      </el-button>
            <el-button 
              @click="resetForm(ruleFormRef)"
              size="large"
              class="reset-btn"
            >
              重置
            </el-button>
    </el-form-item>
  </el-form>
  </el-card>
    </div>
  </div>
</template>

<script lang="ts" setup>
import { onMounted, reactive, ref } from 'vue'

import { ElMessage, type FormInstance, type FormRules } from 'element-plus'
//import axios from 'axios'
import { useRouter } from 'vue-router'
//引入pinia
import { useCounterStore } from "@/stores/counter"
//pinia 变量
const counter = useCounterStore();
const router = useRouter()

import { dataRead } from '@/Utils/Http';



//钩子函数
onMounted(() => {
  createCheckCode()

  //反填 记住密码
  ruleForm.userName=localStorage.getItem('userName')??""
  ruleForm.userPass = localStorage.getItem('userPass') ?? ""
  //勾选记住密码(用户名密码 不为空)
  if (ruleForm.userName) {
    ruleForm.savePassword=true
  }
})

//登录类型
interface RuleForm {
  userName: string
  userPass: string
  checkCode: string //输入验证码
  showCode: string  //显示验证码(生成)
  savePassword:boolean //记住密码
}

const ruleFormRef = ref<FormInstance>()
//用户登录
const ruleForm = reactive<RuleForm>({
  userName: '',
  userPass: '',
  checkCode: '', //输入验证码
  showCode: '',  //显示验证码(生成)
  savePassword:false //记住密码
  
})

const rules = reactive<FormRules<RuleForm>>({
  userName: [
    // { required: true, message: '请输入用户名', trigger: 'blur' },
    // { min: 3, max: 30, message: '字符长度介于[3-30]', trigger: 'blur' },
  ],
  userPass: [
    // { required: true, message: '请输入密码', trigger: 'blur' },
    // { min: 4, max: 30, message: '字符长度介于[4-30]', trigger: 'blur' },
  ],
  checkCode: [
    // { required: true, message: '请输入验证码', trigger: 'blur' },
    //{ min: 4, max: 30, message: '字符长度介于[4-30]', trigger: 'blur' },
  ],
})
//生成验证码
const createCheckCode = () => {
  //数据源
  const strCode1="0123456789"
  const strCode2 = "0123456789qwertyuiopasdfghjASDFGHJKQLMNVCXZSTY"
  //运算符
  const strCalc = "+-*/"

  //数字+字母
  //清除已经生成的验证码
  ruleForm.showCode = "";
  //1.生成4位 循环四次
  // for (let i = 0; i < 4; i++)
  //  {
  //   //随机下标
  //   const index = Math.floor(Math.random() * strCode2.length);
  //   //获取下标对应的字符,追加到生成的验证码中
  //   ruleForm.showCode = ruleForm.showCode + strCode2[index];
  //  }
  //2.生成算式验证码
  //第一个数字
  let num1 = Math.floor(Math.random() * 9) + 1;
  //第二个数字
  let num2 = Math.floor(Math.random() * 9) + 1;
  //运算符号
  const calc = strCalc[Math.floor(Math.random() * strCalc.length)];
  //减法小于0
  if (calc == "-" && (num1 - num2 < 0))
  {
    const temp = num1;
    num1 = num2;
    num2 = temp;
  }
  //除法,除不尽
  if (calc == "/" && (num1 %num2 > 0))
  {
    num1 =num1*num2;
  }
  //生成验证码
  ruleForm.showCode = num1 + calc + num2;
}

//登录
const submitForm = async (formEl: FormInstance | undefined) => {
  if (!formEl) return
  await formEl.validate((valid, fields) => {
    if (valid) {
      console.log('submit!', ruleForm)
      //验证码判断,不区分大小写(转换为统一大小写)
      // if (ruleForm.checkCode.toUpperCase() != ruleForm.showCode.toUpperCase())
      // {
      //   ElMessage.error("验证码错误!请重新输入")
      //   createCheckCode()
      //   return
      // }

      //算式判断
      if (ruleForm.checkCode != eval(ruleForm.showCode).toString())
      {
          ElMessage.error("验证码错误!请重新输入")
          createCheckCode()
          return
      }
      
        dataRead.post('/BaseData/Login', ruleForm).then(res => {
            if (res.data.code==100)
            {
        //        // 登录成功，写JWT的 token到本地
        // window.localStorage.setItem("token", res.data.accessToken);
        //       // 数据提交后端要加入新的Token值
        // axios.defaults.headers.common["Authorization"] =
        //         "Bearer " + res.data.accessToken;

              //勾选记住密码
              if (ruleForm.savePassword)
              {
                localStorage.setItem('userName', ruleForm.userName);
                localStorage.setItem('userPass', ruleForm.userPass);
              }
              else//未勾选 记住密码,删除localStorage中的用户名密码
              {
                localStorage.removeItem('userName');
                localStorage.removeItem('userPass');
              }
           //给 pinia赋值
               Object.assign(counter.userInfo,res.data.data)
                ElMessage.success("登录成功!")
              //
                router.push('/main')
            }
            else
            {
                ElMessage.error(res.data.message)
            }
            
        })
    } else {
      console.log('error submit!', fields)
    }
  })
}

const resetForm = (formEl: FormInstance | undefined) => {
  if (!formEl) return
  formEl.resetFields()
}


</script>
<style scoped>
.login-bg-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  overflow: hidden;
}

/* 食品溯源主题背景 */
.food-traceability-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

/* 主背景渐变 - 柔和的食品溯源主题 */
.main-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    #2d5a27 0%, 
    #4a7c59 20%, 
    #6b8e23 40%, 
    #8fbc8f 60%, 
    #a8d8a8 80%, 
    #c8e6c8 100%);
  background-attachment: fixed;
}

/* 食品图标装饰 */
.food-elements {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.food-icon {
  position: absolute;
  font-size: 2.5rem;
  opacity: 0.15;
  animation: foodFloat 8s ease-in-out infinite;
  filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.3));
}

/* 兔头相关图标位置 */
.rabbit-1 { top: 15%; left: 8%; animation-delay: 0s; }
.rabbit-2 { top: 25%; right: 12%; animation-delay: 1s; }
.rabbit-3 { bottom: 30%; left: 15%; animation-delay: 2s; }
.rabbit-4 { top: 60%; right: 8%; animation-delay: 3s; }

/* 麻辣调料图标位置 */
.spice-1 { top: 20%; left: 85%; animation-delay: 0.5s; }
.spice-2 { top: 45%; left: 5%; animation-delay: 1.5s; }
.spice-3 { bottom: 25%; right: 20%; animation-delay: 2.5s; }
.spice-4 { top: 70%; left: 25%; animation-delay: 3.5s; }

/* 四川特色图标位置 */
.sichuan-1 { top: 35%; right: 5%; animation-delay: 1s; }
.sichuan-2 { bottom: 40%; left: 80%; animation-delay: 2s; }
.sichuan-3 { top: 80%; right: 35%; animation-delay: 3s; }

/* 传统食品图标位置 */
.traditional-1 { top: 10%; left: 50%; animation-delay: 0.8s; }
.traditional-2 { bottom: 15%; left: 45%; animation-delay: 1.8s; }
.traditional-3 { top: 50%; right: 30%; animation-delay: 2.8s; }

/* 数据流线条 */
.data-flow-lines {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.flow-line {
  position: absolute;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.3) 50%, 
    transparent 100%);
  height: 2px;
  animation: dataFlow 6s linear infinite;
}

.line-1 {
  top: 20%;
  left: -100%;
  width: 200px;
  animation-delay: 0s;
}

.line-2 {
  top: 40%;
  right: -100%;
  width: 150px;
  animation-delay: 2s;
}

.line-3 {
  top: 60%;
  left: -100%;
  width: 180px;
  animation-delay: 4s;
}

.line-4 {
  top: 80%;
  right: -100%;
  width: 120px;
  animation-delay: 1s;
}

/* 二维码装饰 */
.qr-decoration {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.qr-code {
  position: absolute;
  width: 40px;
  height: 40px;
  background: 
    linear-gradient(45deg, 
      rgba(255, 255, 255, 0.1) 25%, 
      transparent 25%, 
      transparent 75%, 
      rgba(255, 255, 255, 0.1) 75%),
    linear-gradient(-45deg, 
      rgba(255, 255, 255, 0.1) 25%, 
      transparent 25%, 
      transparent 75%, 
      rgba(255, 255, 255, 0.1) 75%);
  background-size: 8px 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  animation: qrPulse 4s ease-in-out infinite;
}

.qr-1 { top: 30%; left: 10%; animation-delay: 0s; }
.qr-2 { top: 60%; right: 15%; animation-delay: 1.5s; }
.qr-3 { bottom: 20%; left: 70%; animation-delay: 3s; }

/* 扫描线效果 */
.scan-lines {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.scan-line {
  position: absolute;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(0, 255, 0, 0.8) 50%, 
    transparent 100%);
  animation: scanMove 3s linear infinite;
}

.scan-1 { top: 25%; animation-delay: 0s; }
.scan-2 { top: 50%; animation-delay: 1s; }
.scan-3 { top: 75%; animation-delay: 2s; }

/* 动画定义 */
@keyframes foodFloat {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0.15;
  }
  50% {
    transform: translateY(-15px) rotate(5deg);
    opacity: 0.25;
  }
}

@keyframes dataFlow {
  0% {
    transform: translateX(0);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translateX(100vw);
    opacity: 0;
  }
}

@keyframes qrPulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.3;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.6;
  }
}

@keyframes scanMove {
  0% {
    transform: translateX(-100%);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* 登录卡片容器 */
.login-card-container {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 480px;
  padding: 20px;
}

/* 登录卡片样式 - 麻辣兔头主题 */
.login-card {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-radius: 24px;
  box-shadow: 
    0 25px 50px rgba(45, 90, 39, 0.15),
    0 0 0 1px rgba(255, 255, 255, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  border: 2px solid rgba(76, 124, 89, 0.2);
  padding: 50px 40px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
    background: linear-gradient(90deg, 
      #2d5a27 0%, 
      #4a7c59 25%, 
      #6b8e23 50%, 
      #8fbc8f 75%, 
      #a8d8a8 100%);
}

.login-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 
    0 35px 70px rgba(45, 90, 39, 0.2),
    0 0 0 1px rgba(255, 255, 255, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

/* 系统标题 - 麻辣兔头主题 */
.system-title {
  text-align: center;
  margin-bottom: 45px;
  position: relative;
}

.title-icon {
  font-size: 3rem;
  margin-bottom: 15px;
  display: block;
  animation: iconPulse 2s ease-in-out infinite;
}

.system-title h1 {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, 
    #2d5a27 0%, 
    #4a7c59 30%, 
    #6b8e23 60%, 
    #8fbc8f 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 15px 0;
  letter-spacing: 2px;
  text-shadow: 0 2px 4px rgba(139, 0, 0, 0.1);
}

.system-title p {
  color: #4a7c59;
  font-size: 16px;
  margin: 0;
  font-weight: 500;
  letter-spacing: 1px;
  opacity: 0.8;
}

/* 标题图标动画 */
@keyframes iconPulse {
  0%, 100% {
    transform: scale(1);
    filter: drop-shadow(0 0 5px rgba(220, 20, 60, 0.3));
  }
  50% {
    transform: scale(1.1);
    filter: drop-shadow(0 0 10px rgba(220, 20, 60, 0.5));
  }
}

/* 表单样式 - 麻辣兔头主题 */
.login-form {
  width: 100%;
}

.login-form .el-form-item {
  margin-bottom: 28px;
}

.login-form .el-form-item__label {
  font-weight: 700;
  color: #8B0000;
  font-size: 16px;
  margin-bottom: 8px;
  display: block;
}

/* 输入框样式 - 麻辣兔头主题 */
.login-form .el-input__wrapper {
  border-radius: 16px;
  box-shadow: 
    0 4px 12px rgba(139, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  border: 2px solid rgba(220, 20, 60, 0.2);
  background: rgba(255, 255, 255, 0.9);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  height: 52px;
}

.login-form .el-input__wrapper:hover {
  border-color: #DC143C;
  box-shadow: 
    0 6px 20px rgba(220, 20, 60, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  transform: translateY(-1px);
}

.login-form .el-input__wrapper.is-focus {
  border-color: #FF4500;
  box-shadow: 
    0 8px 25px rgba(255, 69, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
}

.login-form .el-input__inner {
  color: #8B0000;
  font-weight: 500;
  font-size: 15px;
}

.login-form .el-input__inner::placeholder {
  color: #FF6347;
  font-weight: 400;
}

/* 输入框图标样式 */
.login-form .el-input__prefix {
  color: #DC143C;
}

.login-form .el-input__suffix {
  color: #DC143C;
}

/* 验证码容器 - 麻辣兔头主题 */
.verification-container {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.verification-code {
  background: linear-gradient(135deg, 
    #8B0000 0%, 
    #DC143C 50%, 
    #FF4500 100%);
  border: none;
  color: white;
  font-weight: 700;
  border-radius: 12px;
  padding: 10px 16px;
  min-width: 90px;
  text-align: center;
  box-shadow: 0 4px 12px rgba(139, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.verification-code:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139, 0, 0, 0.4);
}

.refresh-link {
  font-size: 13px;
  text-decoration: none;
  color: #DC143C;
  font-weight: 500;
  transition: all 0.3s ease;
  padding: 4px 8px;
  border-radius: 6px;
}

.refresh-link:hover {
  color: #8B0000;
  background: rgba(220, 20, 60, 0.1);
  transform: translateY(-1px);
}

/* 按钮组 - 麻辣兔头主题 */
.button-group {
  margin-top: 35px;
  text-align: center;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.button-group .el-button {
  width: 140px;
  height: 50px;
  border-radius: 16px;
  font-weight: 700;
  font-size: 16px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  margin: 0;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.login-btn {
  background: linear-gradient(135deg, 
    #8B0000 0%, 
    #DC143C 50%, 
    #FF4500 100%);
  border: none;
  color: white;
  box-shadow: 0 6px 20px rgba(139, 0, 0, 0.3);
}

.login-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.2), 
    transparent);
  transition: left 0.5s;
}

.login-btn:hover::before {
  left: 100%;
}

.login-btn:hover {
  background: linear-gradient(135deg, 
    #660000 0%, 
    #B22222 50%, 
    #CC3300 100%);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(139, 0, 0, 0.4);
}

.reset-btn {
  background: rgba(255, 255, 255, 0.9);
  border: 2px solid rgba(220, 20, 60, 0.3);
  color: #DC143C;
  box-shadow: 0 4px 12px rgba(220, 20, 60, 0.1);
}

.reset-btn:hover {
  background: rgba(220, 20, 60, 0.05);
  border-color: #DC143C;
  color: #8B0000;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(220, 20, 60, 0.2);
}

/* 复选框样式 - 麻辣兔头主题 */
.el-checkbox {
  color: #DC143C;
  font-weight: 600;
  font-size: 15px;
}

.el-checkbox__input.is-checked .el-checkbox__inner {
  background-color: #DC143C;
  border-color: #DC143C;
  box-shadow: 0 2px 8px rgba(220, 20, 60, 0.3);
}

.el-checkbox__inner {
  border: 2px solid rgba(220, 20, 60, 0.3);
  border-radius: 6px;
  transition: all 0.3s ease;
}

.el-checkbox__inner:hover {
  border-color: #DC143C;
  box-shadow: 0 2px 8px rgba(220, 20, 60, 0.2);
}

/* 响应式设计 - 麻辣兔头主题 */
@media (max-width: 768px) {
  .login-card-container {
    padding: 15px;
  }
  
  .login-card {
    padding: 35px 25px;
    border-radius: 20px;
  }
  
  .system-title h1 {
    font-size: 30px;
    letter-spacing: 1px;
  }
  
  .title-icon {
    font-size: 2.5rem;
  }
  
  .verification-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .button-group {
    gap: 15px;
  }
  
  .button-group .el-button {
    width: 120px;
    height: 45px;
    font-size: 15px;
  }
  
  .food-icon {
    font-size: 2rem;
  }
  
  .qr-code {
    width: 30px;
    height: 30px;
  }
}

@media (max-width: 480px) {
  .login-card {
    padding: 25px 20px;
  }
  
  .system-title h1 {
    font-size: 26px;
  }
  
  .button-group {
    gap: 10px;
  }
  
  .button-group .el-button {
    width: 100px;
    height: 42px;
    font-size: 14px;
  }
  
  .login-form .el-input__wrapper {
    height: 48px;
  }
}

/* 加载动画 - 食品溯源主题 */
.login-card {
  animation: slideInUp 1s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(60px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* 额外的食品溯源主题效果 */
.login-card::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, 
    rgba(76, 124, 89, 0.03) 0%, 
    transparent 70%);
  animation: ripple 8s ease-in-out infinite;
  pointer-events: none;
}

@keyframes ripple {
  0%, 100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
}
</style>
